I thought I had a power tailgate issue

[dieselfan1]

It made all the bells go off but wouldn't open on my 23 High Country. 

Then I realized I had the fob for my 22 LTD LTZ in my pocket also with the fob for the 23.

Put the 22 fob back on the kitchen table went back out and it works just fine.

It must get confused when there are two fobs present.

 

[repairman54]

I've had the same with the fob for my '20 Traverse. It's a matter of which fob the truck first detects IMO. 

[dieselfan1]

I was 99% sure that was the problem.  Now I know for sure. Thanks